Alarm-clock



UNITED STATES PATENT OFFICE.

JOHNATHAN S. TURNER, OF NEW HAVEN, CONNECTICUT.

ALARM-CLOCK.

Specification of Letters Patent No. 9,123, dated July 13, 1852.

To all whom it may concern:

Be it known that I, JONATHAN S. TURNER, of the town and county of New Haven, in the State of Connecticut, have invented a new and useful Improvement in Alarm- Timepieces; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, which make a part of this specification, in which Figure 1, is a front view, or elevation, of the gearing of the alarm part, with the front plate removed, showing the double notched cam, and the locking apparatus. Fig. 2, is a side view, or elevation of the same. Fig. 3, is a view of the upper lock shaft.

My improvement consists in so constructing the alarm part, that it will give alarms for eight days, (or more,) with once winding. And so that it will give but one alarm in twenty four hours, or while the hour hand is making two complete revolutions.

I make the time piece in any of the ordinary ways, or otherwise, and the alarm part with an ordinary train of wheels and pinions, as seen at A, B, G, and a, b, 0, and a pallet wheel, E, with its pinion, d, Fig. 2, and count wheel, F, Figs. 1 and 2. I

I make a dial to set the alarm in the ordinary way, as seen at G, Figs. 1 and 2, to the back of which I attach a snail, I-I, Figs. 1 and 2, into the notch, e, of which the lifting, or drop, wire, f, Figs. 1, 2, and 8, falls to let 01f the alarm.

On the arbor, and attached to the collet, of wheel, 0, I fix a cam, I, Figs. 1 and 2, in which I make two notches, or spaces, as seen at g, and h, Figs. 1 and 2, in which the detent, i, falls to prevent the alarm by allowing the count wire, 9', to fall into the score, or space, 70, Fig. 1. And I make two lock shafts, K, and L, with three wires, for detent-s, lifters, &c., in each, as seen in Fig. 1.

I set the alarm by turning the alarm dial forward so as to bring the time marker on that dial directly under, or back of, the hour hand of the time piece, in the usual way of setting alarm dials, (as at 18 minutes past twelve, seen in Fig. 1.) And as this dial, G, and snail, H, (or their spring socket,) is slipped onto the socket of the hour wheel, or that on which the hour hand is placed,) the alarm dial, and snail will be carried around with the hour hand, so that when the hour hand has advanced so much of a circle as from p, to 0, Fig 1, the inclined plane of the snail will raise the lifter, or drop wire, f, so that the lifting wire, m, of the lock shaft, K, Figs. 1, 2, and 3, will lift the wire, a, of the lock shaft L, and thereby raise the detent, or count wire, j, from the score, or space, is, in the count wheel and the detent, z', from the notch, or space, g, in the double notched cam, so as to allow the gearing to move forward, (in the direction indicated by the darts,) until the wire, 9, in the arbor of the fly pinion comes in contact with the detent, 1", (which has also been raised, it being on the same lock shaft with, f,) which stops the motion of the alarm gearing, so that the whole will remain in the position seen in Fig. 1, until the hour hand has completed its revolution; when the lifting, or drop wire, f, will fall from p, to c, Fig. 1, thereby releasing the wire, 9, from the detent, 1', leaving the fly at liberty, but allowing the detent, 2', to fall into the notch or space, it, in the cam, I, which detains the gearing in that position until the hour hand has again advanced a portion of a revolution equal to that from p, to 0, Fig. 1, when all the detents will be raised as before described, and the fly pinion will be-detained by the detent, r, as before described, until the hour hand has again completed its revolution, when the lifting, or drop wire, f, will again fall from 29, to 6, thereby releasing the fly pinion, as before described; at which time the detent, i, will fall on the inclined plane, 8, of the cam, I, and prevent the count wire, j, from falling into the score, or space, is, Fig. 1. And as the detent 2', passes up the inclined plane, .9, or is raised by it, it raises the count wire, 7', above the teeth of the count wheel, and while the count wire, j, rests between the teeth, the detent,-i, cannot fall into the notches in the cam, I, and as the gathering pin, 2., Fig. 2, in the collet of the wheel, C, will revolve the count wheel, F, one tooth by every revolution of the wheel, C, the alarm will continue as long as is required to effect a revolution of the count wheel, when the count wire, 9', will fall again into the score, or space, is, and allow the detent, i, to fall into the notch, or space, g, in the cam, I. This count wheel, F, works on a socket in the usual way for striking the hour in clocks, and may be made of the size, and graduated, to suit customer.

The alarm is produced by the main wheel, A, working in the pinion, d, Fig. 2, of the pallet wheel, E, which acts on the pallets, M, which move the hammers, N, in the usual way for alarm time pieces.

The advantages of my improvement consists in so constructing the alarm part of any time piece, (or to be attached to any time piece,) by means of the double notched cam, &c., that it will continue to give alarms, for eight days, or more, with once winding, but it will only give an alarm once in twenty-four hours; and yet, so that it may be set to give the alarm at any time desired, (even in a few minutes,) by turning the alarm dial forward, more than twelve hours, when necessary.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination of the double notched cam, I, with the locking apparatus, K, and

L, with their appendages, f, m, r, n, 2, j., 20

and 9, when used in any kind of time pieces, for giving alarms at the time desired, and giving more than one alarm with once winding, when the whole is constructed, arranged and combined, substantially, as herein de- 25 

